Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.24-2.294.3-5
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
Irregular/uneven
Cleavage
Very poor [100]
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
Mohs Hardness
5-5.53-3.5
2
10
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Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
BaSO4